These sites will help you register your web site in online directories and search engines. Also included are resources for Search Engine Optimization, and resources for finding the SuperSites so vital to linkage campaigns.

When you see a link that says, "view items similar to this," chances are it's powered by Alexa, a service owned by Amazon.com that groups similar links by content. Free download of the Alexa Toolbar, which provides instant access to Web Search, Related Links, Site Stats, and Contact Info for sites you visit plus a Popup Manager.

Nifty directory of the top web sites based on traffic, search inquiries, and clickthrough. While their methodology is a little mysterious, their lists of top web sites by subject area are excellent. A good way to find supersites.